Linear Codes for the Sum Mod-2 Multiple-Access Channel with Restricted Access

Gregory Poltyrev, Jakov Snyders

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Transmission of information through a multiple-access modulo-2 adder channel is addressed for the situation that out of a fixed family of N potential users at most some m, m < N are active simultaneously. We assign codes to the N users in a way that the receiver is able to correct any t or less errors and separate the s ≤ m messages without a priori knowledge of the subset of active users. A decoding procedure is presented. The efficiency of our method of code construction is demonstrated by some examples and by an upper bound, that asymptotically tends to zero, on the loss of rate.

Original languageEnglish
Pages (from-to)794-799
Number of pages6
JournalIEEE Transactions on Information Theory
Issue number3
StatePublished - May 1995


  • Multiple-access channel
  • linear code
  • maximum distance separable code
  • modulo-2 separable codes


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